Corkscrew



FIG. 1 is a perspective view of corkscrew showing my new design;

FIG. 2 is a front elevational view thereof, the rear elevational viewbeing identical;

FIG. 3 is a left side elevational view thereof, the right side viewbeing identical;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The ornamental design for corkscrew, as shown and described.